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公开(公告)号：US4723142A
公开(公告)日：1988-02-02
申请号：US926808
申请日：1986-10-30
申请人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
发明人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
CPC分类号： G02B7/32
摘要： The disclosed device prevents degradation of distance measurement accuracy due to alignment error in the mounting of a detachable lens barrel on a camera body. The lens barrel houses a focusing objective lens and a first distance measurement position is set along the optical path of the objective lens within the lens barrel. A second distance measuring position is set within the camera body. A light projector is positioned at one of the distance measuring positions and projects a measuring beam, and a photo detector is positioned at the other of the distance measuring positions to receive a reflection beam from the object being measured to produce a signal to be used for focus adjustment.
摘要翻译： 所公开的装置防止由于在相机机体上安装可拆卸镜筒而导致对准误差导致的距离测量精度的劣化。 透镜镜筒容纳聚焦物镜，沿镜片镜筒内的物镜的光路设置第一距离测量位置。 在相机机身内设置第二测距位置。 光投射器位于距离测量位置中的一个位置并且投射测量光束，并且光电检测器位于距离测量位置的另一个处，以接收来自被测量物体的反射光束，以产生用于 焦点调整。
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公开(公告)号：US4717819A
公开(公告)日：1988-01-05
申请号：US677207
申请日：1984-12-03
申请人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
发明人： Kikuo Momiyama , Kazuo Fujibayashi , Keiji Ohtaka
CPC分类号： G03B3/10
摘要： A focus detecting device arranged to detect the focusing condition of an objective lens by projecting a light flux from a light source onto an object through the objective lens and by sensing the light flux after it is reflected from the object. The focus detecting device is provided with sensors which produce information necessary for detecting the focal point of the objective lens by sensing the light of the light source reflected by the object. Degradation of the device's detection accuracy due to the eccentrically mounted objective lens is prevented when these sensors are symmetrically arranged relative to a plane containing the optical axis of the objective lens.
摘要翻译： 一种焦点检测装置，其被配置为通过将来自光源的光束投射到物体上并通过在物体被反射之后感测光束来检测物镜的聚焦状态。 焦点检测装置设置有传感器，其产生通过感测由物体反射的光源的光来检测物镜的焦点所需的信息。 当这些传感器相对于包含物镜的光轴的平面对称地布置时，防止由于偏心安装的物镜导致的装置的检测精度的降低。
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公开(公告)号：US4544256A
公开(公告)日：1985-10-01
申请号：US648704
申请日：1984-09-07
申请人： Kikuo Momiyama , Kazuo Fujibayashi
发明人： Kikuo Momiyama , Kazuo Fujibayashi
IPC分类号： G03B7/099 , G03B7/0997 , G03B19/12
CPC分类号： G03B19/12 , G03B7/09979
摘要： In the single lens reflex camera including a photographic system having an objective lens and an image detector, and a viewfinder optically disposed of the photographic system and comprising a focusing screen having a transparent area surrounded by a light diffusing area, a prism for changing the direction of an optical path, and an eye-piece in sequence from the object, a light receiving element for light measuring is positioned away from an optical axis of the viewfinder in rear of an image forming lens for converging the light from the focusing screen to the light receiving element, and is provided with a mask for blocking the main part of an image of the transparent area which is formed by the image forming lens, thereby the proportionality between the variation of F-number of the objective lens and the amount of light measured is improved.
摘要翻译： 在包括具有物镜和图像检测器的照相系统的单镜头反光照相机中，以及光学地设置在摄影系统中的取景器，包括具有由光漫射区域包围的透明区域的聚焦屏幕，用于改变方向的棱镜 的光路和从物体开始的眼镜，用于光测量的光接收元件远离成像透镜后方的取景器的光轴，用于将来自聚焦屏的光会聚到 光接收元件，并且设置有用于阻挡由成像透镜形成的透明区域的图像的主要部分的掩模，由此物镜的F数的变化与光量之间的比例 测量得到改善。
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公开(公告)号：US4330188A
公开(公告)日：1982-05-18
申请号：US161433
申请日：1980-06-20
申请人： Kazuo Fujibayashi , Kikuo Momiyama
发明人： Kazuo Fujibayashi , Kikuo Momiyama
CPC分类号： G03B13/28
摘要： A focusing screen capable of showing an out-of-focus image in a conspicuous manner has a split prism forming portion on the central portion thereof which consists of a central area and a peripheral area surrounding the central area. Split prisms slanting in different directions are formed in the central and peripheral areas of the split prism forming portion.
摘要翻译： 能够以显眼的方式显示失焦图像的聚焦屏在其中心部分具有由中心区域和围绕中心区域的外围区域组成的分割棱镜形成部分。 在分割棱镜形成部分的中心和周边区域中形成沿不同方向倾斜的分离棱镜。
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公开(公告)号：US5287147A
公开(公告)日：1994-02-15
申请号：US824782
申请日：1992-01-22
CPC分类号： G03B27/542 , G03B27/526 , G03G15/04 , G03G15/0435
摘要： An original scanning apparatus comprising original support means on which an original is rested, elongated light source means for illuminating the original rested on the original support means, reflection means for reflecting light from the elongated light source means toward the original support means. The elongated light source means is fixed and the reflection means being shiftable, so that the original rested on the original support means is scanned by shifting the reflection means. Apparatus further includes side reflector means disposed at a longitudinal end of the elongated light source means and extending along a shifting direction of the reflection means.
摘要翻译： 一种原始扫描装置，包括原件支撑装置，原件搁置在原件上，用于照亮搁置在原始支撑装置上的原件的细长光源装置，用于将来自细长光源装置的光反射到原始支撑装置的反射装置。 细长光源装置是固定的，并且反射装置是可移动的，使得搁置在原始支撑装置上的原件通过移动反射装置被扫描。 装置还包括设置在细长光源装置的纵向端并沿着反射装置的移动方向延伸的侧反射器装置。
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公开(公告)号：US4985726A
公开(公告)日：1991-01-15
申请号：US501432
申请日：1990-03-22
CPC分类号： G03B7/20 , G03B7/09976 , G03B7/09979
摘要： A photometric device for a camera arranged to measure light by dividing a photographing field into a plurality of areas and to permit use of an interchangeable lens. The device computes a measured light value using information obtained from the interchangeable lens on its exit pupil position or on a correction value required for correcting its intrinsic drop of image plane light quantity along with information on each of the luminance values of the plurality of areas.
摘要翻译： 一种用于照相机的测光装置，其被布置成通过将拍摄场分成多个区域并且允许使用可互换镜头来测量光。 该装置使用从可互换镜头在其出射光瞳位置获得的信息或校正其固有的图像平面光量下降所需的校正值以及关于多个区域的每个亮度值的信息来计算测量的光值。
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公开(公告)号：US4595270A
公开(公告)日：1986-06-17
申请号：US603197
申请日：1984-04-23
CPC分类号： G02B13/18 , G02B13/22 , G02B25/001
摘要： The disclosed finder system includes, from front to rear, a first objective lens of negative power, an optical member having a half-mirror, an eyepiece of positive power and a viewfinder frame arranged near the eyepiece to be observed by the eyepiece with the aid of a reflection from the half-mirror. The finder system satisfies the condition 0.2
摘要翻译： 所公开的取景器系统包括从前到后的负功率的第一物镜，具有半透镜的光学构件，正光焦度的目镜和设置在目镜附近的取景框架，以借助于目镜观察 从半反射镜的反射。 取景器系统满足条件0.2
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公开(公告)号：US4398808A
公开(公告)日：1983-08-16
申请号：US225341
申请日：1981-01-15
申请人： Kazuo Fujibayashi
发明人： Kazuo Fujibayashi
IPC分类号： G02B15/167 , G02B15/173 , G02B15/18
CPC分类号： G02B15/173
摘要： A compact zoom lens of high magnification comprises four lens groups. In succession from the object side, the first lens group has a positive refractive power and a focusing function, the second lens group has a negative refractive power and a magnification changing function and consists, in succession from the object side, of a negative lens having its concave surface of sharper curvature facing the image side, a negative doublet lens consisting of a biconcave lens and a positive lens, and a negative lens having its concave surface of sharper curvature facing the object side, the third lens group has a positive refractive power and is reciprocable to correct the movement of the image point resulting from zooming, and the fourth lens group has a negative refractive power. Correction of aberrations is well accomplished by suitably selecting the focal length of the doublet lens in the second lens group and the curvature radii of the third, fourth and sixth lens surfaces in the second lens group as viewed from the object side.
摘要翻译： 高倍率的小型变焦镜头包括四个透镜组。 从物体侧开始，第一透镜组具有正折射光焦度和聚焦功能，第二透镜组具有负折光力和倍率变化功能，并且从物体侧连续地构成具有 其面向图像侧的更锋利的曲率的凹面，由双凹透镜和正透镜组成的负双折射透镜，以及具有朝向物体侧的更锐曲的凹面的负透镜，第三透镜组具有正折射力 并且可往复地校正由变焦产生的图像点的运动，并且第四透镜组具有负折射力。 通过适当地选择第二透镜组中的双透镜的焦距以及从物体侧观察第二透镜组中的第三，第四和第六透镜表面的曲率半径，可以很好地实现像差的校正。
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公开(公告)号：US4240705A
公开(公告)日：1980-12-23
申请号：US943615
申请日：1978-09-19
申请人： Kazuo Fujibayashi
发明人： Kazuo Fujibayashi
IPC分类号： G02B9/34
CPC分类号： G02B9/34
摘要： An objective of the expanded Tessar type is disclosed. Five elements form four components of which the first counting from the front is positive and convex toward the front, the second is a bi-concave lens, the third is a positive doublet consisting of a negative lens element and a bi-convex lens element cemented together at their adjoining surfaces, and the fourth is a bi-convex lens. The objective fulfills the following conditions: ##EQU1## wherein f is the focal length of the entire lens system; Ri is the radius of curvature of the i-th surface counting from the front; Di is the axial thickness of the i-th glass or air lens element; and Ni is the refractive index of the material of the i-th lens element.
摘要翻译： 公开了扩展的Tessar类型的目标。 五个元件形成四个部件，其中从前面开始的第一个计数是正的和向前的凸面，第二个是双凹透镜，第三个是由负透镜元件和双凸透镜元件粘合的正双折射 一起在其相邻的表面上，第四个是双凸透镜。 目标满足以下条件：
（1）D4 <0.056f（2）0.08 -
公开(公告)号：US5995131A
公开(公告)日：1999-11-30
申请号：US991611
申请日：1997-12-16
申请人： Kazuo Fujibayashi , Koji Hoshi , Manabu Kato , Yoshihiro Ishibe
发明人： Kazuo Fujibayashi , Koji Hoshi , Manabu Kato , Yoshihiro Ishibe
CPC分类号： G02B26/125 , G02B13/0005
摘要： A scanning optical apparatus includes a light source device, a first optical element for converting a beam emitted from the light source device to a converging light beam, a deflecting element for deflecting the beam emitted from the light source device, a second optical element for focusing the beam emerging from the first optical element in a linear shape longitudinal in a main scanning direction on a deflective face of the deflecting element, and a third optical element for focusing the beam deflected by the deflecting element in a spot shape on a scanned surface. The third optical element has a spherical lens and a toric lens in order from the side of the deflecting element, surfaces of the spherical lens comprise a meniscus shape of positive refracting power with a concave surface faced toward the deflecting element, and the toric lens has two lens surfaces formed in aspherical shapes in a main scanning section and comprising a meniscus shape of positive refracting power with a convex surface faced toward the deflecting element in the vicinity of a center of scan.
摘要翻译： 一种扫描光学装置，包括光源装置，用于将从光源装置发射的光束转换成会聚光束的第一光学元件，用于偏转从光源装置发射的光束的偏转元件，用于聚焦的第二光学元件 在偏转元件的偏转面上以主扫描方向纵向呈线性形状的第一光学元件射出的光束，以及用于将由偏转元件偏转的光束以斑点形状聚焦在扫描表面上的第三光学元件。 第三光学元件具有从偏转元件一侧依次的球面透镜和复曲面透镜，球面透镜的表面包括正折射率的弯月形，凹面朝向偏转元件，复曲面具有 在主扫描部分中形成为非球面形状的两个透镜表面，并且包括在折射中心附近具有面向偏转元件的凸表面的正折射率的弯月形状。
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